Senior is a surname and occasional given name. Notable people with the name include:
Surname Abraham Senior (1412–1493), last crown Sephardi rabbi of Castile Anna Senior (born 1941), Australian costume designer Brian Senior (born 1953), British bridge player Clarence Senior (1903–1974), American socialist political activist Innes Senior (born 2000), English-born professional rugby league footballer John Senior (born 1960), British Army major John L. Senior (1879–1946), American sports administrator Julio Ximenes Senior (1901–1975), Brazilian scientist and Army general Justin Senior (born 1994), American football player Keith Senior (born 1976), English rugby league player Louis Senior (born 2000), English-born professional rugby league footballer Moira Senior (born 1976), field hockey player from New Zealand Nadine Senior (1931–2016), British dance educator Nassau William Senior (1790–1864), English economist Omer Senior (born 2003), Israeli association footballer (soccer player) Peter Senior (born 1959), Australian golfer Robert Senior (born 1964), British businessperson Russell Senior (born 1961), British musician and record producer Stephen Senior, Welsh politician Thomas B. A. Senior (1928–2017), British-American electrical engineer and professor at University of Michigan
Given name Senior Sachs (1816–1892), Russo-French Hebrew scholar